Taffy integration #1880

Job	Run time
cargo check (msrv) (wasm32)	32s
cargo check (aarch64-android)	25s
cargo check (msrv) (windows-latest)	2m 51s
cargo clippy (windows-latest)	32s
cargo check (msrv) (macos-latest)	52s
cargo clippy (macos-latest)	32s
cargo check (msrv) (ubuntu-latest)	51s
cargo clippy (wasm32)	1m 24s
cargo clippy (ubuntu-latest)	40s
cargo doc	1m 42s
formatting	13s
Prime LFS Cache	4s
cargo test (wasm32)	29s
typos	5s
cargo test (windows-latest)	5m 0s
cargo test (macos-latest)	1m 57s
cargo test (ubuntu-latest)	4m 34s
	22m 43s

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